<body style="background: black">
<div class="spinner"></div>
</body>
<style>

  .spinner{
    width:10em;
    height:10em;
    margin: 100% auto;
    border:1.1em solid rgba(255,255,255,.2);
    border-left-color: #fff;
    border-radius:50%;
    animation:load 1.1s infinite linear;
  }
  @keyframes load{
    from{
      transform: rotate(0deg);
    }
    to{
      transform: rotate(360deg);
    }

  }
</style>
